where for convenience we have written the separation constant as \(\rm 3\nu ^2\) . In the following sections we will show that quantum solutions can be divided into two classes, which will depend on combinations of \(\lambda _1,\lambda _2\) . Moreover, in [1]}, [2]} it has been shown that the best candidates for quantum solutions are wave functions that have a damping behavior with respect to the scale factor, since these allow to obtain good classical solutions when using the WKB approximation for any scenario in the evolution of our universe. Thus, the quantum analytical solutions to be presented in this paper will have this characteristic, featuring a damping behavior with respect to the average scale factor (cubic root of the isotropic volume \(\rm V\) ).
